Ported from the Xbox 360 with the aid of Demiurge Studios and sporting a revised interface, the title requires a minimum of 12GB hard drive space, a 2.4 GHz Intel or 2.0 GHz AMD processor, a GeForce 6 series or ATI 1300XT video card, and 1GB of RAM for Windows XP users.

The full minimum and recommended specs are as follows:

Minimum System Requirements

Operating System:
Windows XP or Vista

Processor:
2.4+GHz Intel or 2.0+GHz AMD

Memory:
1 Gigabyte RAM (XP)
2 Gigabyte RAM (Vista)

Video Card:
NVIDIA GeForce 6 series(6800GT or better)
ATI 1300XT or better (X1550, X1600 Pro and HD2400 are below minimum system requirements)

Hard Drive Space:
12 Gigabytes

Sound Card:
DirectX 9.0c compatible sound card and drivers

Recommended System Requirements

Operating System:
Windows XP or Vista

Processor:
2.6+GHz Intel or 2.4+GHz AMD

Memory:
2 Gigabyte RAM

Video Card:
NVIDIA GeForce 7900 GTX or higher
ATI X1800 XL series or higher

Hard Drive Space:
12 Gigabytes

Sound Card:
DirectX 9.0c compatible sound card and drivers - 5.1 sound card recommended

Additional Note from Derek French
The Mass Effect Config program will automatically adjust your settings on first run, to attempt to give you an optimal play experience. As with all PC games, computer performance varies from system to system and adjustments can be made via the Config or through the in-game options to tailor your experience.